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Javascript 步骤向导窗体_Javascript_Angular_Forms_Typescript_Angular Reactive Forms - Fatal编程技术网

Javascript 步骤向导窗体

Javascript 步骤向导窗体,javascript,angular,forms,typescript,angular-reactive-forms,Javascript,Angular,Forms,Typescript,Angular Reactive Forms,我正在使用角动态表单进行角应用,我需要将表单分为两部分 在其中,我在第一页输入了字段firstname和lastname,单击下一步按钮,需要加载具有电子邮件和下拉列表的孩子 Html: <form (ngSubmit)="onSubmit()" [formGroup]="form"> <div *ngFor="let question of questions" class="form-row"> <ng-cont

我正在使用角动态表单进行角应用,我需要将表单分为两部分

在其中,我在第一页输入了字段
firstname和lastname
,单击下一步按钮,需要加载具有
电子邮件和下拉列表的孩子

Html:

    <form (ngSubmit)="onSubmit()" [formGroup]="form">

        <div *ngFor="let question of questions" class="form-row">
            <ng-container *ngIf="question.children">
                <div [formArrayName]="question.key">
                    <div *ngFor="let item of form.get(question.key).controls; let i=index" [formGroupName]="i">
                        <div *ngFor="let item of question.children">
                            <app-question [question]="item" [form]="form.get(question.key).at(i)"></app-question>
                        </div>
                    </div>
                </div>
            </ng-container>
            <ng-container *ngIf="!question.children">
                <app-question [question]="question" [form]="form"></app-question>

            </ng-container>
        </div>

  <button (click)="goBack()"> Previous </button> &nbsp;
  <button (click)="addControls('myArray')"> Next </button> 

        <div class="form-row">
            <button type="submit" [disabled]="!form.valid">Save</button>
    </div>
  </form>
  @Input() questions: QuestionBase<any>[] = [];
  form: FormGroup;
  payLoad = '';

  page: number = 0

  constructor(private qcs: QuestionControlService) { }

  ngOnInit() {
    this.form = this.qcs.toFormGroup(this.questions);
  }

  onSubmit() {
    this.payLoad = JSON.stringify(this.form.value);
  }
  addControls(control: string) {
    let question: any = this.questions.find(q => q.key == control);
    let children = question ? question.children : null;
    if (children)
      (this.form.get(control) as FormArray).push(this.qcs.toFormGroup(children))
  }
  removeControls(control: string){
    let array=this.form.get(control) as FormArray;
    array.removeAt(array.length-1);
  }

  goBack() {
    //Function to move to previous step
  }
明确地说,我现在不打算使用它,也不打算在任何地方移除任何东西。。唯一的问题是单击next(下一步),通过
addControl
功能将子项添加到下一页,然后单击previous(上一步)返回上一步

为了附加到演示中给出的同一页,它应该移动到下一页,再次单击上一页,它应该回到原始状态。每单击一次,它应该给出一封新的
电子邮件和下拉列表
,上一步返回上一步

它应该像滑块一样在前后移动时产生滑动效果

所有内容都需要纯角度和基于javascript/typescript,并且没有jquery。。正如您可以在我的演示中看到的,我没有包括任何库或jquery


请帮助我取得这个结果。。长时间呆滞..

已尝试达到您的要求:UI部分除外。我希望你能按照你的要求处理你的用户界面

TS:

从'@angular/core'导入{Component,Input,OnInit};
从'@angular/forms'导入{FormGroup,FormArray};
从“/question base”导入{QuestionBase};
从“./question-control.service”导入{QuestionControlService};
@组成部分({
选择器:“应用程序动态表单”,
templateUrl:'./dynamic form.component.html',
提供者:[问题控制服务]
})
导出类DynamicFormComponent在NIT上实现{
@输入()问题:问题库[]=[];
表格:表格组;
有效载荷='';
页码:编号=0;
构造函数(专用qcs:QuestionControlService){}
恩戈尼尼特(){
this.form=this.qcs.toFormGroup(this.questions);
}
onSubmit(){
this.payLoad=JSON.stringify(this.form.value);
}
addControls(控件:字符串,索引:任意){
让array=this.form.get('myArray')作为FormArray;
如果(array.length>this.page){
this.page=this.page+1;
}否则{
让问题:any=this.questions.find(q=>q.key==control);
让子对象=问题?问题。子对象:null;
if(儿童)
(this.form.get(control)作为FormArray)。push(this.qcs.toFormGroup(children))
this.page=this.page+1;
}
}
RemoveControl(控件:字符串){
让array=this.form.get(control)作为FormArray;
array.removeAt(array.length-1);
}
戈巴克(){
如果(this.page>0){
this.page=this.page-1;
}
//让array=this.form.get('myArray')作为FormArray;
//array.removeAt(array.length-1);
//函数移到上一步
}
}
HTML:
以前的
下一个
拯救

{{form?.value | json}}

这将帮助您一次显示一页。如果不存在下一个表单,它将创建一个新表单。单击“上一步”,它将导航到旧表单。

尝试达到您的要求:除了UI部分。我希望你能按照你的要求处理你的用户界面

TS:

从'@angular/core'导入{Component,Input,OnInit};
从'@angular/forms'导入{FormGroup,FormArray};
从“/question base”导入{QuestionBase};
从“./question-control.service”导入{QuestionControlService};
@组成部分({
选择器:“应用程序动态表单”,
templateUrl:'./dynamic form.component.html',
提供者:[问题控制服务]
})
导出类DynamicFormComponent在NIT上实现{
@输入()问题:问题库[]=[];
表格:表格组;
有效载荷='';
页码:编号=0;
构造函数(专用qcs:QuestionControlService){}
恩戈尼尼特(){
this.form=this.qcs.toFormGroup(this.questions);
}
onSubmit(){
this.payLoad=JSON.stringify(this.form.value);
}
addControls(控件:字符串,索引:任意){
让array=this.form.get('myArray')作为FormArray;
如果(array.length>this.page){
this.page=this.page+1;
}否则{
让问题:any=this.questions.find(q=>q.key==control);
让子对象=问题?问题。子对象:null;
if(儿童)
(this.form.get(control)作为FormArray)。push(this.qcs.toFormGroup(children))
this.page=this.page+1;
}
}
RemoveControl(控件:字符串){
让array=this.form.get(control)作为FormArray;
array.removeAt(array.length-1);
}
戈巴克(){
如果(this.page>0){
this.page=this.page-1;
}
//让array=this.form.get('myArray')作为FormArray;
//array.removeAt(array.length-1);
//函数移到上一步
}
}
HTML:
以前的
下一个
拯救

{{form?.value | json}}

这将帮助您一次显示一页。如果不存在下一个表单,它将创建一个新表单。单击“上一步”,它将导航到旧表单。

因此,您希望从中删除最后添加的控件
电子邮件和下拉列表
控件
  removeControls(control: string){
    let array=this.form.get(control) as FormArray;
    array.removeAt(array.length-1);
  }
    import { Component, Input, OnInit } from '@angular/core';
    import { FormGroup, FormArray } from '@angular/forms';

    import { QuestionBase } from './question-base';
    import { QuestionControlService } from './question-control.service';

    @Component({
      selector: 'app-dynamic-form',
      templateUrl: './dynamic-form.component.html',
      providers: [QuestionControlService]
    })
    export class DynamicFormComponent implements OnInit {

      @Input() questions: QuestionBase<any>[] = [];
      form: FormGroup;
      payLoad = '';

      page: number = 0;

      constructor(private qcs: QuestionControlService) { }

      ngOnInit() {
        this.form = this.qcs.toFormGroup(this.questions);
      }

      onSubmit() {
        this.payLoad = JSON.stringify(this.form.value);
      }
      addControls(control: string, index: any) {
        let array = this.form.get('myArray') as FormArray;
        if (array.length > this.page) {
          this.page = this.page + 1;
        } else {
          let question: any = this.questions.find(q => q.key == control);
          let children = question ? question.children : null;
          if (children)
            (this.form.get(control) as FormArray).push(this.qcs.toFormGroup(children))
          this.page = this.page + 1;
        }
      }
      removeControls(control: string) {
        let array = this.form.get(control) as FormArray;
        array.removeAt(array.length - 1);
      }

      goBack() {
        if (this.page > 0) {
          this.page = this.page - 1;
        }
        //let array = this.form.get('myArray') as FormArray;
        //array.removeAt(array.length - 1);
        //Function to move to previous step
      }

    }

HTML : 

<div>
    <form (ngSubmit)="onSubmit()" [formGroup]="form">

        <div *ngFor="let question of questions" class="form-row">
            <ng-container *ngIf="question.children">
                <div [formArrayName]="question.key">
                    <div *ngFor="let item of form.get(question.key).controls; let i=index" [formGroupName]="i">
            <ng-template [ngIf]="i + 1 == page"> 
              <div *ngFor="let item of question.children">
                <app-question [question]="item" [form]="form.get(question.key).at(i)"></app-question>
              </div>
            </ng-template>
                    </div>
                </div>
            </ng-container>
            <ng-container *ngIf="!question.children">
                <app-question [question]="question" [form]="form"></app-question>

            </ng-container>
        </div>

  <button (click)="goBack()"> Previous </button> &nbsp;
  <button (click)="addControls('myArray',i)"> Next </button> 

        <div class="form-row">
            <button type="submit" [disabled]="!form.valid">Save</button>
    </div>
  </form> <br>

  <pre>
{{form?.value|json}}
</pre>
</div>
  goBack() {
    //Function to move to previous step
    if(this.form.controls['myArray']){      
      const arr = <FormArray>this.form.controls.myArray;
      arr.removeAt(arr.length - 1);
    }
  }
   <button (click)="goBack('myArray')"> Previous </button> &nbsp;    
  goBack(control: string) {
    let question: any = this.questions.find(q => q.key == control);
     let children = question ? question.children : null;
    if (children)

      (this.form.get(control) as FormArray).removeAt(children.length-1)

  }
<div class="step container" *ngIf="form.valid && nextForm" >
 <form [formGroup]="step2">
  <app-step2 (control)="enableSave($event)"></app-step2>
  <button class="btn btn-primary"  (click)="moveToPrevious()" >Previous</button>
</form>
</div>
<hr>
<button
[disabled]="eSave"
 class="btn btn-primary" (click)="save()">Save</button>
</app-stepper-wrapper>
name = 'Angular';
  eSave = true;
  form = new FormGroup({});
  step2 = new FormGroup({});
  nextForm = false;

  ngOnInit() {
    this.form.statusChanges.subscribe(s => this.eSave = true);
  }   
  moveToNext() {
    if (this.form.valid) {
      this.nextForm = true;
    }
  }   
  moveToPrevious() {
    this.nextForm = false;
  }
  save() {
    console.log(this.form);
    console.log(this.step2);
  }
  enableSave($event) {
    if ($event == 'VALID' && this.form.valid) {

      this.eSave = false;
    }
  }